The 6.5 Creedmoor was designed around long pointy bullets with very low drag (
VLD).
These include their 185-grain Match
VLD (.549 BC), 190-grain Match
VLD (.570 BC) and 210-grain Match
VLD Target (.631 BC).
Its ARMOR data multiplexers are used in multi-channel telemetry applications as the front-end for its Model 64 and buffered
VLDS S-VHS cassette recorders.
The return from 50% to normal osmolarity also elicited
VLDs; hence,
VLD formation occurred when the cell was reshrinking and membrane tension was falling back to normal.
With
VLDs, I start with the cartridge loaded length about 0.006" longer than contacting the throat, jamming the bullet into the throat, and adjust from there.
This is why the .33 Nosier will work better with
VLDs than the .338 Win.
To find a
VLDs sweet spot, start with the same steps above but begin with about 0.005" of jam into the throat.
tape cassette format is used by Metrum Instrumentation Products (Denver, CO) in its Buffered
VLDS (BVLDS) line of instrumentation recorders.
Boat tails are not like
VLDs and don't require chasing the throat.
After one shot at 25 yards to make sure the collimating was reasonably close, I fired a 3-shot group at 100, using Hunting Shack factory ammo loaded with 168-grain Berger Hunting
VLDs. Despite a fairly stiff quartering wind, the shots went into a little over an inch.
With that fast twist, best groups so far have been with 140- and 142-grain Sierra MatchKings and 140-grain Berger Match Target
VLDs. Best of the best (which, admittedly, I did not shoot) so far is a .223-inch cluster with the moly-coated Bergers.